Finding the Fourth Proportional to 39,300.54, 58,932.71 and 12,641.61

Step by Step Solution

1. Step 1: Write the proportion equation
   39,300.54 : 58,932.71 = 12,641.61 : x
2. Step 2: Convert to fraction form
   39,300.54/58,932.71 = 12,641.61/x
3. Step 3: Cross multiply
   39,300.54x = 58,932.71 × 12,641.61
4. Step 4: Simplify right side
   39,300.54x = 745,004,073.00
5. Step 5: Solve for x
   x = 745,004,073.00/39,300.54
6. Step 6: Final answer
   x = 18,956.59